May be some at higher RPM's but having a turbo the filter itself does not do much.What made a different is that there is a closed up opening on the battery side which the cover can be taken off from creating a much bigger breathing hole than just the hose going out to under the fender.This way the performance isnt suffer compared to the cone filter still has a better insulation from radiant heat under the hood than the cone has.By removing the foam from inside the box the suction and the dumping noise is pretty loud just like with the cone filter.On the side note I like to have a unique ride and just having this custom air-box I think I stand out of the crowd of open cone filter club which is the easiest upgrade so its not what I wanted.